2 Chronicles 29:17

17 They began the Temple cleaning on the first day of the first month and by the eighth day they had worked their way out to the porch - eight days it took them to clean and consecrate The Temple itself, and in eight more days they had finished with the entire Temple complex.

2 Chronicles 29:17 Meaning and Commentary

2 Chronicles 29:17

Now they began on the first day of the first month to
sanctify
Either of the reign of King Hezekiah, or rather of the year; the month Ab or Nisan, as the Targum expresses it: and on the eighth of the month came they to the porch of the Lord;
they seem to have begun cleansing the inner part of the temple first, and so came forward until they came to the porch which led into it: so they sanctified the house of the Lord in eight days;
the holy place, and it may be the most holy place, and the court of the priests: and on the sixteenth day of the first month they made an end;
it took them eight days more to cleanse the outward porch, and the buildings and chambers belonging to the temple; according to Jarchi, it required so much time, because Ahaz had framed pictures of idols upon the walls of the temple, which could not be defaced sooner.

2 Chronicles 29:17 In-Context

15 They presented themselves and their brothers, consecrated themselves, and set to work cleaning up The Temple of God as the king had directed - as God directed!

16 The priests started from the inside and worked out; they emptied the place of the accumulation of defiling junk - pagan rubbish that had no business in that holy place - and the Levites hauled it off to the Kidron Valley.

17 They began the Temple cleaning on the first day of the first month and by the eighth day they had worked their way out to the porch - eight days it took them to clean and consecrate The Temple itself, and in eight more days they had finished with the entire Temple complex.

18 Then they reported to Hezekiah the king, "We have cleaned up the entire Temple of God, including the Altar of Whole-Burnt-Offering and the Table of the Bread of the Presence with their furnishings.

19 We have also cleaned up and consecrated all the vessels which King Ahaz had gotten rid of during his misrule. Take a look; we have repaired them. They're all there in front of the Altar of God."